Chickens have to endure suffering that no living thing should have to go through. The egg laying chickens have to be forced into tiny cages without enough room to stretch their wings. Up to 8 hens are crammed in to a cage that is the size of a folded newspaper, about 11"-14". Stress from the confinement leads to severe feather loss so the chicken will be almost completely bald in the cold cages. When the chickens are of egg-laying age, there beaks are cut off without any pain killers to ease the pain, they do this so the chickens don't break their own eggs and eat them because the chickens are hungry.
Broiler chickens, luckily for them, only live up to 7 weeks old until they are big enough to be slaughtered. Their life starts out in incubator trays with hundreds and thousands of other chicks without enough head room to stand up, and not enough room to take 2 tiny steps. So for the first week of their lives it goes from cramp trays, to cramp boxes, to getting dumped onto the filthy floors of the factory farm. They don't clean the floors from the past chickens either. As the chickens grow the walking space gets smaller and tighter for the chickens. The chickens are selectively bred and are given special drugs in the food and water to make the chickens grow incredibly fast. Because of the breeding and drugs, a lot of the chickens develop leg problems which make is sometimes impossible to walk and stand so they either can't get to the food or they can't reach the water. Also, because of the ammonia in the feces, the chickens often